Paper Title:

Mass spectrum of spin-one hadrons in dense two-color QCD: Novel predictions by extended linear sigma model

Published on:

28 December 2023

Primary Category:

High Energy Physics - Phenomenology

Paper Authors:

Daiki Suenaga,

Kotaro Murakami,

Etsuko Itou,

Kei Iida

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Construct extended linear sigma model for spin-0 and spin-1 hadrons respecting approximate SU(4) symmetry

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Examine spin-1 hadron mass spectrum at finite density within mean-field analysis

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Find vector meson/diquark mean fields crucial to match lattice onset condition and pion mass

•

Reproduce slight rho mass reduction via mixing effects

•

Demonstrate possible axialvector and vector condensed phases

Mass spectrum of spin-one hadrons in dense two-color quantum chromodynamics

This paper constructs an extended linear sigma model to describe both spin-0 and spin-1 hadrons in two-color quantum chromodynamics (QCD) while respecting approximate Pauli-Gürsey SU(4) symmetry. A mean-field analysis examines the spin-1 hadron mass spectrum at finite quark chemical potential and zero temperature. Incorporating vector meson and vector diquark baryon mean fields in addition to scalar counterparts is key to reproducing lattice results for the onset baryon superfluidity condition and pion mass dependence. Mixing effects also explain the slight rho meson mass reduction, and predict possible axialvector and vector condensed phases.

Modeling strange quark spin correlations in QCD strings

Fate of chiral symmetry in quark-gluon plasma

Two-dimensional massless quantum chromodynamics approaches conformal behavior

Lattice calculation of form factors for B meson decays

Large N limit of chiral condensate

Finite size and temperature effects in critical long-range O(N) models

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